Yes, I know I can save and reset it. But my point was that I was not observing the script to actually inherit from the caller.
Perhaps COLUMNS is not exported, try export COLUMNS before running doit2
If COLUMNS is not set scripts/programs could be using tput cols or similar to query the terminal for it's actual width.
Also see bash shopt checkwinsize, this keeps COLUMNS and LINES updated automatically, this is useful for an xterm where the users could resize the window after the shell has started.
Last edited by Chubler_XL; 04-27-2014 at 10:09 PM..
Hi all
is menu driven by SELECT can be a dynamic ?
My requirement is that i want SELECT to be created on run time not predefine . The select should be created as per the no of
words in a file
thanks in advance
rawat (2 Replies)
Is there any way to implement a drop down menu selection in bash?
This is on CDLinux which is a very minimal live CD and I am using it to install an image onto a hard drive. Part of that process is the timezone selection. There are just too many timezones to attempt to use the "select" command.... (1 Reply)
is there a way I can make the menu list reappear when I use select ?
-----
menulist="Change_title Remove_tag Change_tag Add_line Quit"
select word in $menulist #change_title remove_tag change_tag add_line quit
do
case $word in
# first menu option Change Title
... (9 Replies)
Hello everyone.
I am using the select command to build a menu, here is my question:
Is it possible to generate a menu which contains several sections and have a separator between the sections without having a selection number generated in front of the separator?
This is a sample of what I would... (1 Reply)
Hi All,
I am trying to use the select command & the menu.
below mention is my script
#!/bin/bash
2
3 PS3="Is today your birthday? " #PS3 system variable
4
5 echo "\n"
6
7
8 select menu_selection in YES NO QUIT
9 do
10
11 ... (1 Reply)
Hi,
I am using a select in ksh for a script
#!/bin/ksh
FIRSTLIST='one two three four quit'
PS3='Please select a number: '
select i in $FIRSTLIST ;
do
case $i in
one) print 'this is one' ;;
two) print 'this is 2' ;;
three) print 'this is 3' ;;
four) print... (7 Replies)
I am creating a Select menu with a few options and I would like to create a "better" looking interface than just this:
1) Option 1
2) Option 2
3) Option 3
Instead, I would like something like this:
***********
* Cool Script *
* 1) Option 1 *
* 2) Option 2 *
* 3) Option 3 *... (2 Replies)
Hi All,
I need to develop a bash script list “list of files” and able to select if any and set as globe variable in script and use for other function.
I would like to see in menu format.
Example out put
Below are the listed files for database clone
1. Sys.txt
2. abc.txt
3. Ddd.txt... (1 Reply)
A lot of my scripting makes use of the 'select' command to create menu driven input. A typical example of how I use it is as:
somevar=''
PS3='Select one: '
while ]; do
select somevar in $(sqlplus -s $dbuser/$dbpw@mydb <<EOF
set echo off feedback off verify off... (7 Replies)
hi i am new to bash scripting ..
i created a bunch of folders but only want the folder names with file1. so i go in and make an array to grab the folders the put in a file then i strip the directories so i just have the folder names i need then i would like to make the menu with a selection... (3 Replies)
Discussion started by: lamby22
3 Replies
LEARN ABOUT PLAN9
clear
clear(1) General Commands Manual clear(1)NAME
clear - clear the terminal screen
SYNOPSIS
clear [-Ttype] [-V] [-x]
DESCRIPTION
clear clears your screen if this is possible, including its scrollback buffer (if the extended "E3" capability is defined). clear looks in
the environment for the terminal type given by the environment variable TERM, and then in the terminfo database to determine how to clear
the screen.
clear writes to the standard output. You can redirect the standard output to a file (which prevents clear from actually clearing the
screen), and later cat the file to the screen, clearing it at that point.
OPTIONS -T type
indicates the type of terminal. Normally this option is unnecessary, because the default is taken from the environment variable TERM.
If -T is specified, then the shell variables LINES and COLUMNS will also be ignored.
-V reports the version of ncurses which was used in this program, and exits. The options are as follows:
-x do not attempt to clear the terminal's scrollback buffer using the extended "E3" capability.
HISTORY
A clear command appeared in 2.79BSD dated February 24, 1979. Later that was provided in Unix 8th edition (1985).
AT&T adapted a different BSD program (tset) to make a new command (tput), and used this to replace the clear command with a shell script
which calls tput clear, e.g.,
/usr/bin/tput ${1:+-T$1} clear 2> /dev/null
exit
In 1989, when Keith Bostic revised the BSD tput command to make it similar to the AT&T tput, he added a shell script for the clear command:
exec tput clear
The remainder of the script in each case is a copyright notice.
The ncurses clear command began in 1995 by adapting the original BSD clear command (with terminfo, of course).
The E3 extension came later:
o In June 1999, xterm provided an extension to the standard control sequence for clearing the screen. Rather than clearing just the vis-
ible part of the screen using
printf '